Sterile neutrino decay and the LSND experiment
arXiv:hep-ph/0602083 · doi:10.1088/1742-6596/39/1/077
Abstract
We propose a new explanation of the intriguing LSND evidence for electron antineutrino appearance in terms of heavy (mostly sterile) neutrino decay via a coupling with a light scalar and light (mostly active) neutrinos. We perform a fit to the LSND data, as well as all relevant null-result experiments, taking into account the distortion of the spectrum due to decay. By requiring a coupling g ~ 10^{-5}, a heavy neutrino mass m_4 ~ 100 keV and a mixing with muon neutrinos |U_{mu 4}|^2 ~ 10^{-2}, we show that this model explains all existing data evading constraints that disfavor standard (3+1) neutrino models.
arXiv comment3pp. Talk given at 9th International Conference on Astroparticle and Underground Physics (TAUP 2005), Zaragoza, Spain, 10-14 Sep 2005
References in corpus (21)
- Direct Evidence for Neutrino Flavor Transformation from Neutral-Current Interactions in the Sudbury Neutrino Observatory
- Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam
- Measurement of Neutrino Oscillation with KamLAND: Evidence of Spectral Distortion
- A Measurement of Atmospheric Neutrino Oscillation Parameters by Super-Kamiokande I
- Status of global fits to neutrino oscillations
- Evidence for muon neutrino oscillation in an accelerator-based experiment
- Upper limits for neutrino oscillations muon-antineutrino to electron-antineutrino from muon decay at rest
- Search for nu(mu)-->nu(e) Oscillations in the NOMAD Experiment
- A combined analysis of short-baseline neutrino experiments in the (3+1) and (3+2) sterile neutrino oscillation hypotheses
- Neutrino Oscillations as a Probe of Dark Energy
- Low reheating temperature and the visible sterile neutrino
- LSND, SN1987A, and CPT Violation
- Lorentz Violation and Short-Baseline Neutrino Experiments
- Interpreting the LSND anomaly: sterile neutrinos or CPT-violation or...?
- (3+1)-spectrum of neutrino masses: A chance for LSND?
- Explaining LSND by a decaying sterile neutrino
- Bounds on heavy sterile neutrinos revisited
- CPT Violating Decoherence and LSND: a possible window to Planck scale Physics
- LSND anomaly from CPT violation in four-neutrino models
- Status of four-neutrino mass schemes: a global and unified approach to current neutrino oscillation data
- Hierarchical Four-Neutrino Oscillations With a Decay Option